Magnetic ore separator



Oct; 9, 1928. 1,686,917

W. L. MCADAMS MAGNET I C ORE S EPARATOR Filed March 16, 1926 2 Sheets-Sheet l ll) Hllllllllllll UN! lnunliilml \lll [III/A.

, 1,686,917 w. MCADAMS MAGNETIC ORE SEPARATOR Oct. 9, 1928.

Filed March 1e, 1926 2 Sheets-Sheet 2 Fatented ()ct. 9, 1928 A UNITED STATES PATENT oFFlcE.

V WILLIAML. MeAnAMs; or COQUILLE, OREGON.

MAGNETIC ORE SEPARATOB.

Application filed March 16, 1926, Serial No. 95,055. I

The present invention relates to amachine or apparatus for separating ores vfrom sand and gravel, and aims to provideanovel and improved device of this character in which magnetic force or attraction is utilized to cause the ores to be drawn from'the sand and gravel, said devicebeingso constructedthat after the ores are separated from the sand and gravel they are'conveyed to a point where the magnetic power is broken, at which time said ores are deposited into a hopper.

, Another object of the invention is the provision of a rotatable disk constructed of a series of spaced sections, said disk being arranged above atrough in which the unseparated substances are deposite'dand; has arranged thereabove an electric magnet which magnetizes the spaced plates as they pass therebeneath and over the trough, said plates remaining magnetized until they move to one side of the trough, at which time the magnetic power is broken and the ores conveyed by the plates will be deposited in the hopper.

' A- further object of the invention is to provide a sectional diskhaving a sheet of glass or other'sim'ilar material arranged on its under surface for-preventing direct contact of ores with the plates of the disk" in order to efiect the efficient dropping of the ores as the plates will also remain slightly magnetized due to their contacting with the electric magnet,

1t is also an object of the invention to provide device of the above indicated character, which is substantial in construction, which can be manufactured for a nominal sum, and which will be thoroughly eflicient and practical in use. i i i Vith the foregomg'and other objects in view, which will be apparent as the descrip-' tion proceeds, the inventionresides-"in the construction and arrangement of parts, as hereinafter described and claimed, it being I understood that changescan be made within the scope of what is claimed, without dcparting from the spirit of the invention.

The invention is illustrated in the accompanying drawings, wherein: A a I I Figure 1 is a longitudinal section through my improved apparatus, Figure 2 is a top plan thereof, I Figure 3 is a crosssection taken on line 3-30f Figure 2, and I I Figure 4515 a fragmentary sect-ion showing thelower portion of the'electric magnet and one ofthe plates of thedisk in contact with said magnet. I

In carrying 'out the invention, the numeral 10 designates a trough, which is slightly in clined. The trough at its upper end 11 where the unseparated substances are deposited is relatively narrow and'has its side 'walls graduallyflared outwardly, as at 12. At the point where the side walls of the trough are flared outwardly, a series of strips 13 are attached to the bottom wall of the trough so as to cause the substances deposited in the trough 11 to bedirected toward the sides of the trough l0 andqiover its entire .area. The trough after being flared out at 12 remains substantially the same width throughout the remainder, of its length, as at 14. Adjacent the strips 13 on the portion 1 10f the trough,

I arrange a series ofa'ngularly disposed strips 15 for directing the substances towards one side 'wallot' the trough At the end of the trough opposite'to that where the substances are deposited thereon is a series of ribs 16 extending across the trough onthe bottom as clearly shown in Figures 2 and 3 of'the' drawings. The disk 19 is cozistruc'tedof three'metallic plates 20 slightly spaced from each other, as at 21,at certain edges thereof so as not to contact with one another. e

Arranged below the metallic plates 20 and supporting the same a plate 22 constructed of glass or other 'similarmaterial which is non-conductive, the. purpose of which will be set forth as the description proceeds.

Attached to the opposite side of thepor- The electric {magnet 24L has arranged thereon centrally thereof a depending socket 25 tion let of the "trough from'that where the disk is rotatably mounted is ahbracket 23 vhich extendsover the trough and supp'orts 5 an electric magnet 24 centrally of the trough.

which issquare in cross sectioni'or s'lidabl'y 3 receiving an upstanding lug 26of similar shape in cross section. The lug 26 is ar ranged upon the upper surface of an'arcuate shaped shoe 27, and is secured thereto, as at 28. The arcuate shoe 2'? is adapted to engage two of the metallic plates of the disk at one time as the disk 19, is rotated. It can be seen that when a circuit is completed to the electric magnet theshoe 27 will transmit the magnetic power to the plates in engagement therewith so that certain ores contained in. the substance deposited in the trough will be drawn upwardly into contact with the glass plate, arranged upon the lower portion of the disk. As the disk rotates and theplat'es 20 disengage the shoe 2?, the magnetic. power to said plates is broken. Con sequcntly all ores attracted by the plates will drop therefrom. It is to be noted by referring to Figures 2 and f the drawings, that when a plate 20 is out of engagement with the shoe 27 said plate is to one side of aower or drawin ower of the )lates ma the trough and positionedover a hopper or chute 29, into which the ores attracted by the plate are deposited. The chute or hopper 29 opens into a box or receptacle 30 positioned upon the floor.

, Mounted beneath the trough 10 is an electric motor 31 having a small pinion 32 on the drive shaft thereof which meshes with a gear 33. f The gear 33. is mounted upon-one end of a shaft which has arranged on its opposite end a sprocket gear 34: over which sprocket chaln 35 1s tra ned and which also is trained over a large sprocket gear 36. The gear 36 is mounted upon, one end of a shaft 37 which has its opposite end slidably received in the lower end of the rotatable shaft 18. The shaft 37 isfeathered to the shaft 18 so that a driving connection between said shafts is .at-all times completed. Arranged upon the lower end ofthe shaft 18 is a pair of spz'tcedcollars 38 which are engaged by lugs 39 arranged upon the ends of a yoke lever it). The yoke lever 40 is pivotally connected, as at ll, to a segment 42 and has arranged thereon a pawl13 for engaging the'seginent 4:2 in order to hold the lever in adjusted position; It can be seen that by swinging the lever 4E0 on its pivot ell, that the shaft 18 is either moved upwardly or downwardly, thus changing the relative distance of the plates 20 from the portionla of the trough. By providing this adjustment for changing the relationship of the plates from the trough, it can be seen that the magnetic be changed according to the substances deposited in the trough.

By providing the glass plate on the under surface of the disk 19, all ores attracted by the plat-es 20 are prevented from contacting directly with the plates, thus eliminating the liability of the ores remaining attracted by the plates after the plates have disengaged the shoe, due to the fact that said plates may become slightly magnetized due to contacting with the shoe 2?. Furthermore, the provisionofa glassplate will eliminate the clan ger of the plates 20 becoming rusted or corroded by the water or liquid contained in the substance deposited in the trough;

In operation, the substances to be separated are deposited at the narrow portion of the trough 10 with a sufficient quantity of water. The water'will tend to wash the substances downwardly in the trough and when the same come in engagement with the strips 13 they spread over the entire width ofthe enlarged portion 1 1 ,ofthe trough. When first engaging the enlarged portion 14: of the through, the substances in the water are di rected. bymeans of'tlie strips 15, towards the edge of the disk 19. When the sub stances and water pass under the disk arranged over the trough and which are in contact with the shoe27, the ores contained in the substance will be attracted by the magnetic power transmitted to the platesfZO contacting with the shoe, due to the magnet being energized. By the positioningof the magnet directly over the trough, the magnetic fields or drawing powersof the magnet will also be an upward direction, thus aiding the plates in raising or drawing the ores to engagement with the glass plate arranged thereunder. The disk 19 is timedj'so' as to revolve very slowly, substantially eight to fifteen r o u i ns ps inute-Wi h. ill-pen mit a sufficient amount of ore to be drawn 7 up and attracted to the under surface of the glass plate. When a plateZQ which has been positioned over the trough turns until the shoe27 is out. of engagement therewith, the sameis arranged; over a hopper or chute 29 sothat as soonfas the magnetic power of Pl is b oken, the v res;att t d, y the plate will be deposited in the'hopper or chute 29. After a plate ZO hasd'ep sitedthe oresattracted thereby, the' same gradually moves until it is again engaged by the shoe sofas to again have magnetic power transmitted thereto. p j g V From the foregoing, it can be seen that my improved apparatus is continuous in operation, and need not be stopped in order to supply a new quantity or. unseparated quantity of substance thereto, and will separate, the substances as the same pass beneath the disk. By providing the adjustment of the disk towards or away from the trough, the magnetic powers ofthe platesmaybe yaried according to the quantity or quality of the ores contained in the sand and gravel or other sub stance the device is to separate. i Y

'Having thus describedmy invention, what lclaim as new is: A T I .1. A magnetic ore separator comprising a trough having a passageway therethrough, a rotatable member journalledupon an airis located at one side ofthe trough, a magnet disposed above the passageway through the trough and extending over that part of the bottom with diagonally disposed ribs adapted to direct material toward the peripheral portion of the rotatable member. I

2. A magnetic ore separator comprising a trough, a rotatable member journalled upon an axis fixed at the side of the trough, said rotatable member being composed of an'underplate of insulating material, spaced magnetizable segments mounted upon the upper surface of said insulating material, each of said segmentsbeing of sufficient-size to completely bridge the trough When disposed thereover, and a magnet located above the rotatable member and having a shoe adapted to contact with said segments.

In' testimony whereof, I have afiixed my 20 signature.

WILLIAM L. MCADAMS. 

